OER? Hi-Temp Exhaust Coat is a fast drying coating designed to withstand temperatures of up to 1200? F on a continuous basis. After curing, it forms a porcelain-like bond. Its special formula resists blistering, discoloration, peeling or loss of adhesion.Suggested Uses:HeadersManifoldsMufflersExhaust PipesBenefits:Overspray is reducedPorcelain-like bond at high temperaturesResists blistering, peeling, discoloration, or loss of adhesionFast dryImportant: Must be heat cured at a minimum temperature of 400? F for two hours. More than one coat may be required for full hide. Do not use a primer.